Furnace or boiler



Sept. 22, 1936. H. BLACKBURN 2,055,400

' FURNACE OR BOILER,

Filed April 5, 1935 2 Sheets- Sheet 1 INVENTOR l3 H.BLACKBURN ATTD R N EY Sept. 22, 1936;

H. BLACKBURN FURNACE OR BOILER 2 Sheets-Sheet 2 F'iledApril 5, 1935 FIG. 4

M m m m6 A IL B H Patented Sept. 22, 1936 UNITED STATES P -ATET OFFWE FURNACE ORIBOILER Henry Blackburn, Har m-a, Canada Application April 5, 1935, Serial No. 14,915 3 Claims. (01. 110-97) The present invention relates to hot water furnaces or boilers such as used in the heating of water for radiation inhomes and buildings or for the heating of water for household service 5 and industrial purposes. i

The main object of the invention isto provide forth no drawback in the casting of the boiler' and being such as may be easily installed and renewed at a minimum'of cost. r

The above objectsare realized by the construction and arrangement of the parts herein described and illustrated in the accompanying drawings in which: 25 Figure 1 is an elevation of a complete furnace one-half of which is shown in vertical section while only exhibiting one-half of the supporting brickwork;

Figure 2 is a top view of the dome thereof 30 partly in section taken on line 2-2 of Figure 1; t

Figure 3 is an elevation of one of the gas controlling bafiies;

Figure 4 is an elevation of the upper part of the furnace partly broken away to show the slightly modified internal construction; and,

Figure 5 is'a top view thereof partly in section taken on line 5-5 of Figure 4.

Identical parts in the five views are denoted by similar numerals.

9 Inthe drawings, 5 is the water jacketed firepot surrounded by brickwork 6 forming an illustrative set-up for the dome boiler I. The fire-pot is interconnected with the boiler system in the mode similar to or closely adhering to the sys- 4 tem described in my previously mentioned patent and, consequently, need not be described here. However, it must be considered that such a fire-bowl is capable of producing a large quantity of evenly carburetted flaming gases 50 which must be utilized and radiated to the water system at the greatest rate to render the system efiicient. For this reason the boiler consists of a comparatively large double-walled dome, the space between the walls being filled with water 55 circulating through outlet a suitably flanged to i connect with the heating system and returning thereto by means of inlets 9 either flanged or threaded as required, also for connection with the system. The dome is provided with an inspection door l suitably hinged thereto.

To avoid burning gases from rising to the top of thefurnace and find an immediate issue to the smokestack with a resulting loss of radiation,

as is the case when the smoke outlet is at the top of'the furnace, the smoke outlet is located near the base of the dome as shown at H leading through a passage l2 'to two openings l3 in the lower inside 'wall of the dome; 'I-Iowever, as this arrangement would permit the burning gases to find an'issue immediately on leaving the fire-pot, 1O

semi-tubular bafiles M are installed, there bemanner conforming to openings l3 and are prov vided with angular lugs l5, there being on e on each side both at top and bottom thereof in engagement with angular lugs 16 integral with the inside wall of the dome. moval of the bafiles'by lifting them out of engagement with lugs IE or the installation of bafiies by downward engagement thereof with the said lugs.

The above arrangement will cause the hot burning gases to brush the whole inside of the dome by being delayed by the baffies which, while conducting them, will cause further radiation along that part of the wall thereby covered. The gases will finally transmit their residue of heat through the upper and lower walls ofpassages l2 in contact with water, before issuing from III.

In the arrangement shown in Figures 4 and 5, only one baflle is employed, it being located in line with smoke outlet H cored directly from the lower inside of the dome. The single bafile is supported in the same manner as those in multiple, by angular lugs l5 and I6, and is, of course, proportionately larger so as to provide a passage for all gases which must be led to the smokestack.

While I have described my invention strictly in accordance with the preferred embodiment illustrated, it must be understood that changes and variations as required in the course of manufacture and due to special installations, may be made as may be within the spirit of the invention and the scope of my claims.

What I claim is:

1. In a furnace, a base structure including a fire pot, a super-structure mounted on the base structure including a heating chamber permanently opening at its bottom into the fire pot and a water circulating space completely surrounding said chamber, said super-structure being provided above and in proximity to its lower end with means to form a smoke outlet extending transversely through said space and open at its inner and outer ends, a vertically disposed This permits the re- V means within said chamber formed with a hollow, semi-spherical lower end having its edge flush with the lower portion of the inner end of said outlet and its remaining portion of semicircular cross section having. its edges abutting the wall of said chamber, said vertical means coacting with said wall to form a smoke conducting oil means leading to said outlet and having an open upper end spaced from the top of said chamber, the wall of said chamber and said vertical means having spaced coacting superposed means for connecting said vertical means to the wall of said chamber.

2. In a furnace, a base structure including a fire pot, a super-structure mounted on the base structure and formed of an inner and an outer section arranged in spaced relation, each section consisting of a dome-shaped top and a cylindrical body open at its lower end, said superstructure including means at its lower end integral with and coacting with said sections to form a water space, said outer section being formed in proximity to its lower end with a water intake and a water outlet for said space,

said inner section forming a heating chamber permanently opening at its bottom into said fire pot and encompassed by the Water space, the body of said inner section being formed near its lower end with a pair of openings, the body of said outer section being provided near its lower end with a smoke outlet flue, means between said bodies providing a smoke passage common to said openings and said smoke outlet flue, spaced means coacting with the wall of said heating chamber to provide a pair of smoke conducting-01f fiues, each being open at its upfor securing said member per end and closed at its lower end, the lower end of each of said means registering with the lower portion of an opening, said inner section and spaced means having coacting superposed parts for anchoring said spaced means and inner section together, and said conducting-off flues having their upper ends positioned in the upper portion of and spaced from the top of said chamher.

3. In a furnace, a base structure including a fire pot, a super-structure mounted on the base structure including a heating chamber closed at its top and permanently opening at its bottom into the fire pot, said super-structure being provided with a water circulation space completely surrounding said chamber and with a smoke outlet flue above and in proximity to its lower end, said smoke outlet flue extending transversely through said space andopen at its inner and outer end, a vertically disposed member within said chamber formed with a hollow, semi-spherical lower end having its edges flush with the lower portion of the inner end of said outlet, the

remaining portion of said member being of semi-V circular cross section and having its edges abutting the wall of said chamber, said member coacting with said wall to form a smoke conducting-ofi flue leading to said outlet, said flue beingclosed at its lower end, the upper end of said flue being open at its upper end and spaced from the top 'of said chamber, said member being formed'with superposed pairs of oppositelydisposed lateral extensions, and means on the wall of said chamber and coasting with said extension thereto. H v

1 I-I. BLACKBURN. 

